Officials. 1920. C.I.S. Overprint. Complete set on cover from Flensburg 10.2.20. Sent to M.O. Ræder (Chief of the C.I.S post department), the address done in pencil, but later erased out. On the back side is the most rare large Commision-canc. (dia. 87 mm.). Mounted on an exhibition page with another postcard written by M.O. Ræder [ Tj1–14 ] [ ✉ ]